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1.The four-frequency group mode is a technique that can be used to improve the performance of wireless networks.
四频组模式是一种可以用于提高无线网络性能的技术。
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2.In this study, we investigated the application of the four-frequency group mode in the field of communication.
在这项研究中，我们探讨了四频组模式在通信领域的应用。
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3. The four-frequency group mode has been widely used in the design of wireless communication systems.
四频组模式在无线通信系统的设计和实施中得到了广泛应用。